baber/WOPTO huggingface dataset:
Patent GB-1127190-A (GB)
Title: Improvements in or relating to a lawn mower rake attachment
IPC: A01D57/01
Filed: 1966-09-05
Abstract: 1,127,190. Raking attachments for lawn mowers. E. T. HUNT. 29 Aug., 1967 [5 Sept., 1966], No. 39570/66. Heading A1F. An attachment for a lawn mower comprises a mounting bar 1 having a plurality of apertures 2, and a rake 4 having a plurality of prongs 3 which extend through the apertures. The attachment is fixed to the mower between its front roller and the cutting cylinder. The rake is adjustably mounted on the bar 1 by means of spring- loaded screws 5. The prongs 3 may be replaced by two parallel rows of finer prongs and spring washers may be located between the rake head and the heads of the screws 5. The ends of the prongs 3 may be bent towards the roller of the mower.
Patent GB-976859-A (GB)
Title: Track-laying vehicle especially for earth moving and levelling
IPC: E02F9/02
Filed: 1962-10-24
Abstract: 976,859. Endless track vehicles. SAARBERGTECHNIK G.m.b.H. Oct. 24, 1962 [Oct. 16, 1962], No. 40256/62. Heading B7H. The track frames 1 of an endless track vehicle are both pivoted on the rigid back axle 2 and each supported from the vehicle frame through a linkage system by an hydraulic cylinder 11 or 12, the pressure fluid chambers 11a, 12a of the two hydraulic cylinders being connected by a line 13. Each linkage system comprises a link 3 pivoted to the track frame and to an arm 5 secured to a shaft 6 pivoted on the vehicle frame and connected by arm 8 to piston-rod 9. An hydraulic accumulator 17 may be connected through cut-off valve 18 to line 13 and incorporate an adjustable spring-loaded piston 20.
Patent GB-832442-A (GB)
Title: Industrial lift truck
IPC: B66F9/08
Filed: 1957-12-31
Abstract: 832,442. Masted lift trucks. YALE & TOWNE MANUFACTURING CO. Dec. 31, 1957, No. 40393/57. Class 78 (3). In a masted lift truck primary, secondary and tertiary uprights 10, 11 and 12 have cut away flange portions 34, 35, 38 and 39 which enable the uprights to disengage without removing guide rollers 32 33, 36 and 37. To prevent the uprights being extended fully to the disengaging position during normal operation of the truck the lifting ram 50 (Fig. 9), is provided with co-operating pairs of stops 56, 57 and 58, 59 which limit extension of the two pistons 52, 53 out of the cylinder 51 which is attached to the uprights 1,1 by brackets 68 (Fig. 3); the pistons 52,53 being arranged to engage the uprights 12 and 10 respectively in such a manner that they are self-aligning. Piston 52 has twice the effective area of piston 53 so that it extends fully before piston 53 moves. Bores 60, 61 co-operate respectively with spaces A, B to cushion the end movement of the pistons. The lifting carriage 13 is connected to the ram cylinder by chains which pass over pulleys mounted on the piston 52. Additional rollers 41-44 (Fig. 8, not shown), co-operate with the staggered edge portions of the flanges of the uprights to prevent them moving laterally. ______
Patent GB-893653-A (GB)
Title: Zoom lens converter attachment
IPC: G02B15/173
Filed: 1960-11-24
Abstract: 893,653. Zoom lenses attachments. KODAK Ltd. Nov. 24, 1960 [Nov. 25, 1959], No. 40394/60. Class 97(1). A zoom lens converter attachment for mounting in front of a photographic objective, comprises a front positive member, a middle negative member and a rear positive member all coaxially mounted, one of the positive members being normally stationary, the middle and the other positive member being movable and being so mechanically coupled as to keep the system as nearly as possible afocal at all settings of the two movable members, is characterized by the front member consisting of a front negative meniscus element and a positive biconvex element cemented to the back thereof, by the middle member consisting of a front positive meniscus element and a negative biconcave element cemented to the back thereof, by the rear member consisting of a positive element, in which five elements the refractive indices N for the D line of the sodium spectrum, the dispersive indices V and the radii of curvature R of the lens surfaces, each numbered by subscripts from front to rear, are as follows: where L is the distance measured from the front lens surface of the front member to the rear lens surface of the rear member of the converter when the converter is set for unit magnification. Optical data are given for two embodiments of the zoom lens attachment shown in which the front component is normally stationary and the other two components relatively movable to effect zooming. In an alternative, the rear component may be the normally stationary one.
Patent GB-1399382-A (GB)
Title: Isomerisation of dimethylnaphthalenes
IPC: C07C15/24
Filed: 1972-08-31
Abstract: 1399382 Isomerizing dimethylnaphthalenes TEIJIN Ltd 31 Aug 1972 [2 Sept 1971] 40444/72 Heading C5E [Also in Division C2] Dimethylnaphthalenes are isomerized at 260-370‹ C. in the vapour phase using a carrier gas and a silica-alumina catalyst, at least 80 wt. per cent of the catalyst being in the form of particles of size 7-150 mesh (Tyler) 2,6 DMN may be obtained from a mixture of 2,6-, 1,6- and 1,5-DMN; 2,7 DMN from a mixture of 2,7-, 1,7- and 1,8-DMN. Preferably the trimethylnaphthalene content of the feed is not more than 10 mol. per cent. Suitable carrier gases include N 3 , CO 2 , H 2 , and C 1 -C 10  hydrocarbons.
Patent GB-936278-A (GB)
Title: Process for the manufacture of phenols from diazonium salt solutions in a continuousmanner
Filed: 1959-11-27
Abstract: Phenols are continuously prepared by mixing together and reacting a diazonium salt solution and an aqueous solution containing an electrolyte in a reaction zone at a temperature between 25 DEG  and 105 DEG C. and at such a rate that in the combined reaction solution the molar ratio of the electrolyte introduced in the solution thereof to the diazotised amino groups introduced in the diazonium salt solution is within the range of 0,5:1 to 10:1, the water introduced with the electrolyte solution and the salts and acids formed during the reaction which retard the reaction being removed at a rate which is approximately equal to the rate at which they are introduced and formed, so that the composition of the reaction mixture remains substantially constant throughout the reaction and the phenol formed is continuously removed from the reaction zone.  Specified electrolytes are copper sulphate and sodium sulphate.  An organic solvent such as benzene, toluene or chlorobenzene may also be added to the reaction zone to dissolve the phenol and protect it from further reaction.  An apparatus for carrying out the continuous process is described.  In an example a solution of the diazonium sulphate of o-anisidine is heated to 100-102 DEG C. with a copper sulphate solution under the conditions described above to give guaiacol.  The preparation of guaethol m-xylenol, 2-chlorohydroquinone monomethyl ether, p-ethoxy-phenol, 4,41-dihydroxydiphenyl, a -naphthol and 3,31-dichloro-4,41-dihydroxydiphenyl is described in further examples.
Patent GB-1063420-A (GB)
Title: Ethylene recovery
IPC: C07C7/00
Filed: 1965-09-23
Abstract: Ethylene is separated from a gaseous mixture also containing hydrogen, methane and ethane by cooling at superatmospheric pressure to condense the ethylene and ethane, separating hydrogen and methane and using as a coolant in the condensation and separating ethylene from the condensate.  Pyrolysis gas from which C3 and higher hydrocarbons and acetylene have been separated is passed through heat exchangers 2 and 4 and refrigerated coolers 3 and 5 and into flash separator 6.  Gas in line 9 is further cooled in exchanger 10 and passed into flash separator 11 from which gas comprising hydrogen and some of the methane in line 13 is passed as coolant through heat exchangers 10, 4 and 2. Liquid from the separators passes through lines 7 and 12 to different parts of demethanizer 8.  The top of demethanizer 8 contains a reflux condenser cooled by refrigerant to partially liquefy overhead methane from line 17.  Liquid methane in line 28 is partly returned as reflux and the remainder is flashed through valve 30 and combined with gaseous methane in line 27 and used as coolant in exchangers 10, 4 and 2.  Bottoms from demethanizer 8 are fractionated in tower 31 to recover ethane and ethylene.
Patent GB-948250-A (GB)
Title: Apparatus for producing and holding a store of compressed air
IPC: F04B39/10
Filed: 1962-10-26
Abstract: 948,250. Air compressors. DAIMLERBENZ A.G. Oct. 26, 1962 [Nov. 9, 1961], No. 40668/62. Heading FIN. Apparatus for producing and holding a store of compressed air comprises an air compressor 2 delivering through a non-return valve 6 to a storage vessel 7, a leakage point 11, 11<SP>1</SP> or 11<SP>11</SP> being provided between the non-return valve and the compressor. The latter draws in air through a filter 3 and delivers it through a passage 5, the valve 6 and a passage 5<SP>1</SP> to the vessel 7. The valve 6 is spring loaded preferably by a relatively weak spring to avoid noise, provision of the leakage point 11, 11<SP>1</SP> or 11<SP>11</SP> ensuring, when the compressor is stopped, that the pressure drop across the non-return valve becomes large enough to fully close the latter. The point 11 may be a bore or a notch in the delivery valve member 9 of the compressor or in its seat 9<SP>1</SP>. The point 11<SP>1</SP> is a bore in a wall dividing the intake and delivery spaces of the compressor. The point 11<SP>11</SP> is a bore in the passage 5 or the housing 14 of the valve 6; the point 11<SP>11</SP> may be additional to one of the other points 11 or 11<SP>1</SP>. The points may have a cross-section of 1/10 to 3/10 m.m.
Patent GB-1534437-A (GB)
Title: Oxidation catalysts
IPC: C07D307/60
Filed: 1976-10-01
Abstract: 1534437 Oxidation catalyst PETRO-TEX CHEMICAL CORP 1 Oct 1976 [2 Oct 1975] 40762/76 Heading BIE [Also in Division C2] A catalyst composition for use in the partial oxidation of C, to C 10  hydrocarbons comprises V, P. O and a modifying component consisting of the elements Nb, Cu, Mo, Ni, Co and Cr or the same elements with one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg, where the atomic ratio of V:P:modifying component is 1:0.9-1.3:0.005-0.4, respectively. Preferred ratios of V:P:elements are further specified. The catalyst may be prepared by dissolving V, P &c. in a common solvent, e.g. HCl, and depositing the solution onto a carrier, e.g. alumina, silicon carbide, silica gel, other methods include precipitation, dispersion or molten metal deposition.
Patent GB-1086085-A (GB)
Title: Apparatus for casting concrete structures
IPC: E04F21/08
Filed: 1964-10-06
Abstract: 1,086,085. Supplying concrete to shuttering. R. E. GROH. Oct. 6, 1964 [Oct. 8, 1963], No. 40765/64. Heading E1S. (Alsa in Division F2] Shuttering is filled with concrete pumped through an opening at the bottom controlled by a non return valve consisting of flexible flap backed by a plate and mounted in the lower part of a housing attached by a flange to the shuttering surrounding the opening.
Patent GB-906442-A (GB)
Title: Production of electric cable sheaths
IPC: H01B13/00
Filed: 1958-12-18
Abstract: 906,442. Corrugating. OSNABRUCKER KUPFERUND DRAHTWERK. Dec. 18, 1958 [Dec. 19, 1957], No. 40838/58. Class 83 (4). A tool for helically corrugating metal cable sheaths by means of its internal helical deforming surface is characterized in that part of the surface reduces overall diameter of the ridges of the corrugations as it is formed while the remainder of the surface produces the depressions of the corrugations. A tool 3 is rotated, for example by dogs engaging its notched periphery, around a longitudinally advancing cable sheath 1 to draw the sheath down and give it a helical corrugation 2. The tool has an internal spiral entry portion 5 which may taper from an initial width 7 to a width 8, the remainder of the tube engaging surface 6 being of constant diameter. Specifications 763,588 and 763,589 are referred to.
Patent GB-878179-A (GB)
Title: Improvements in and relating to agricultural tractors and like vehicles
Inventor: BECK FRANK
IPC: A01B63/10
Filed: 1959-12-01
Abstract: 878,179. Tractor power lift linkages. POWERHEAD Ltd. Nov. 18, 1960 [Dec. 1, 1959], No. 40853/59. Class 79(1). A tractor power lift mechanism comprising lower links 3 pivoted to the axle structure 2 and lift arms'4 is also provided with one or more auxiliary lift arms 5, pivoted to a frame 7 attached to the tractor and each having a cam surface 6 which co-operates with a roller 12 connected between the arms 3 so as to give a greater raised height than is obtainable with the arms 3. An upper link may be connected to the implement and pivoted to a convergent portion 13 of the frame 7.
Patent GB-409726-A (GB)
Abstract: 409,726. Igniting-systems. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and GRIFFITHS, L., 78, Biggin Hall Crescent, Coventry. Nov. 4, 1932, No. 31145. [Class 7 (iv).] In a system in which a distributer 3 and interrupter 4 are common to two circuits, one including a magneto 1 and the other a battery 9 and coil 2, plug or other selector switches 12 5 are used for the secondary and primary circuits, respectively, and an 'off'-and-'on' switch 8 is common to both systems. The switch 8 in its on ' position removes an earth connection from the magneto primary, and completes a circuit from the coil primary to the contact-breaker through the primary selector switch. Specification 269,314, [Class 7 (iv)], is referred to.
Patent GB-1028893-A (GB)
Title: Improvements in filler strips
Inventor: ANSELM ANTHONY CESAR
IPC: B60R13/04
Filed: 1962-10-30
Abstract: 1,028,893. Glazing packing strips. CREATORS Ltd. Oct. 29, 1963 [Oct. 30, 1962], No. 40987/62. Heading E1R. A glazing packing strip or filler-strip of e.g. extruded P.V.C. particularly for use with panel receiving grooves in a surround of resilient rubber material is provided with a series of teeth, notches corrugations or the like 4, 5 along at least one edge portion whereby the edge or edges of the strip mechanically interengage the rubber of the groove and prevent relative longitudinal movement therebetween. Preferably the strip 1 has on its exposed surface when in use, a metallic finish, as by a strip 2 of transparent plastic film or laminated strip the back surface of which or between the laminations, having a metal coating e.g. aluminised by cathode deposition or spraying. The strip 1 may have a groove 6 on its rear surface. The teeth, notches corrugations &c. may be provided by cutting, rolling or forming before, during or after applying the finish.
Patent GB-974863-A (GB)
Title: Improvements relating to industrial furnaces
IPC: F27D17/00
Filed: 1960-12-01
Abstract: 974,863. Heating air; heating steam boilers by waste gases. WAAGNER-BIRO A.G. Dec. 1, 1960 [Dec. 1, 1959; Dec. 4, 1959; Nov. 18, 1960], No. 41306/60. Headings F4A and F4S. An industrial furnace of the regenerative type, for example a Siemens-Martin furnace or a glass-melting furnace, is provided with a separate waste heat recovery unit through which waste gases from the regenerators are passed and wherein heat recovered from the waste gas is applied to preheat combustion air to be supplied to the regenerators, to preheat feedwater and to generate steam therefrom. In the apparatus shown in Fig. 1, waste gases from a Siemens- Martin furnace 11 flow alternately through regenerators 13 and thence to a heat-recovery unit containing boiler tubes 4 in an up-pass and air-heating surfaces 2 in an adjoining down-pass. Combustion air flows through the heater 2 and is conveyed by a duct 5 to the appropriate regenerator 13. Steam is superheated at 15. In Fig. 4 the air-heating surfaces 2 and boiler surfaces 4, 15 are located side-by-side in a single vessel 1, the waste gas flow being controlled by a damper 16. In Fig. 3 (not shown), the unit consists of a waste gas main spaced along which are chambers containing the airheating and boiler surfaces, gas being diverted through the chambers by dampers disposed in the main. Fig. 6 shows a furnace 11 heated partly by burners 12 and partly by the combustion of low calorific value gas which is preheated in the outer regenerators 13. Waste gases from these regenerators and the inner air preheating regenerators 13 flows through an upright vessel containing a large superheater 15 and boiler surfaces 2. Air is heated in an adjoining vessel by indirect contact with steam superheated at 15. In a final modification, Figs. 7-10 (not shown). the waste heat unit consists of an upright vessel located beside the furnace stack and containing a bank of airheating tubes above a bank of steam generating tubes. A stack damper diverts gases through the vessel which is surmounted by an exhaust fan delivering cooled gases into the stack. Large doors providing access to the tube banks are disposed on one side of the vessel.
Patent GB-1048575-A (GB)
Title: Electromagnetic relays
Inventor: KRASUN HENRYK ADAM
IPC: H01H51/06
Filed: 1963-10-22
Abstract: 1,048,575. Electromagnetic switches. STANDARD TELEPHONES & CABLES Ltd. Oct. 16, 1964 [Oct. 22, 1963], No. 41646/63. Heading H2B. An electromagnetic relay has a rectangular magnetic frame including the armature which constitutes the limb of the frame parallel to that on which the coil of the relay is mounted. The armature is pivoted on the third limb of the frame and engages the fourth limb when attracted thereto due to coil energization. The co-operating faces of the armature and fourth limb are at an acute angle to the coil and armature axes. The armature has integral extension bent toward contact springs for actuation thereof.
Patent GB-1103363-A (GB)
Title: Improvements in or relating to containers openable by tearing
IPC: B65D88/62
Filed: 1966-09-19
Abstract: 1,103,363. Opening containers. CONTINENTAL CAN CO. Inc. 19 Sept., 1966 [24 Oct., 1965], No. 41647/66. Heading B8D. A can end is formed with a removable panel 15 to provide a pouring opening, the panel 15 being defined by a score line 16 and extending radially from the centre of the can end to adjacent the rim of the can end, two short score lines 25 extending radially outwards from the score line 16 to form a hinge 26 in the can end material lying between them. A pull tab 24 is joined to the panel 15 by means of a rivet integral with the can end. The hinge 26 minimizes the risk of the panel 15 being completely removed if abnormal pressure within the can causes the panel 15 to be blown out when first opened by means of the tab 24. The panel 15 first hinges but then tears along its end part (28), Fig. 2 (not shown), when pressure or normal during opening.
Patent GB-932540-A (GB)
Title: Improvements in or relating to stilts for mine arches
Inventor: SWALLOW FREDERICK COLIN
IPC: E21D11/18
Filed: 1959-12-08
Abstract: 932,540. Mine arch stilts. COLIN SWALLOW (MINING) Ltd., and H. BOND. March 8, 1961 [Dec. 8, 1959; Sept. 15, 1960], Nos. 41667/59 and 31877/60. Class 20 (2). Movement of a yielding telescopic mine arch stilt is controlled by a series of C-shaped spring rings 21, Fig. 1, the stilt supporting the mine arch by means of a sole-plate 6, Fig. 4, and a bracket 7a, 7b and being secured to a girder 9 by a welded strip 8. The stilt may be secured to a conventional arch girder by a releasable clamp incorporating at least one wedge, see Figs. 5 ... 11c (not shown).
Patent GB-955295-A (GB)
Title: Converter devices
IPC: H03M1/00
Filed: 1961-11-22
Abstract: 955,295. Electric selective signalling systems. WARNER & SWASEY CO. Nov. 22,1961 [Dec. 27, 1960], No. 41753/61. Heading G4H. In an analogue to digital encoder, a coded disc is rotated by a shaft. Two photo-cells sense the markings at each radius, each pair of cells being connected to a circuit as in Fig. 12. The cells of a pair are spaced apart by the length of the marks on the disc at the particular radius. As a result of this arrangement and the circuitry, although the input waveform has sloping sides when one cell is being obscured and the other uncovered, the output at point 126 is a square waveform. The output is also substantially independent of variations in level of the light illuminating the disc. Typically, the disc is coded in the Gray scale. In order that like digital outputs shall be obtained for like degrees of rotation but in opposite directions from a datum it is necessary to reverse the connections of the cells detecting the most significant digit. Specification 955,294 is referred to.
Patent GB-1354133-A (GB)
Title: Nondestructive testing device for steel parts
IPC: G01N27/84
Filed: 1971-09-08
Abstract: 1354133 Magnetic flaw testing F FORSTER 8 Sept 1971 [9 Sept 1970] 41958/71 Heading G1N Steel objects are tested for flaws by magnetizing with alternating flux between pole piece which have a thickness less than that of the objects, and detecting the stray flux which emerges from any surface cracks. In Fig. 3, a steel billet 1 is magnetized by two oppositely disposed A. C. electromagnets each comprising a ferromagnetic plate 11 and winding 12 energised at the mains frequency or an adjustable frequency. The plates 11 may be resiliently urged towards the billet, rollers being used to allow easy movement of the billet between the plates while maintaining a constant air gap. The windings 12 may be tuned by capacitors to a frequency near that of the A. C. so that if the air gap increases, the A. C. voltage increases to make the field strength substantially independent of variations in the air gap. Magnetic particles are sprayed on the billet from nozzles 22, 23, 24 and adhere to the sites of flaws but are blown off elsewhere. The magnetic particles may be fluorescent, U/V lamps 25 showing up the flaws to an operator who may mark them with chalk, or to scanning photo-cells automatically controlling colour spray guns. To test all four faces of a billet, it may be rotated through 90 degrees and reversed through the test chamber 21, this being repeated until all the faces have been tested. Alternatively, two test chambers may be provided, each chamber testing two opposite faces of the billet. The operator can over-ride the feeding. In Fig. 4, a weld is tested. The A. C. magnet comprises a ferromagnetic yoke 37 and winding 38. A crÛpe rubber roller 33 pressed a presaturated magnetic recording tape 31 to the weld, the tape passing from a supply spool 35 to a take up spool 36 as the apparatus is guided by hand along the weld. Permanently magnetized rollers (not shown) can be provided on each side of the roller 33 to hold the tape in close contact with the test piece. The tape 31 is read later.
Patent GB-1496552-A (GB)
Title: Pneumatic timing device
IPC: F15C4/00
Filed: 1975-10-15
Abstract: 1496552 Pneumatic timing devices BERGWERKSVERBAND GmbH 15 Oct 1975 [19 Oct 1974] 42136/75 Heading F I P A chamber of variable volume, for use in a timing device, comprises a cylinder 1, Fig. 2, and a piston 3 dispaceable longitudinally of the cylinder by a threaded spindle 4 which extends through an end 5 of the cylinder and is rotatable about an axis off-set from the longitudinal axis of the cylinder. In use, the chamber is supplied with compressed air through a duct 16 with a throttle 15 until a predetermined pressure is reached. This pressure is communicated through a duct 17 to sensing means which operate the timing device. Large adjustments of the volume of the chamber are effected by fitting a tubular filler 14 of suitable size. A spring-loaded pin 22, Fig. 5, provides an indication when the piston 3 is at its highest position.